IEC/IEEE 62395-1:2024

Electrical resistance trace heating systems for industrial and commercial applications - Part 1: General and testing requirements

IEC/IEEE 62395-1:2024 specifies requirements for electrical resistance trace heating systems and includes general test requirements.
This first edition cancels and replaces the second edition published in 2013. This edition constitutes a technical revision.
This edition includes the following significant technical changes, apart from general revisions of IEC 62395-1 and harmonization with IEEE 515 [1] and IEEE 515.1 [2], with respect to the previous edition:
a) Added control and monitoring requirements for fire sprinkler systems and safety showers.
b) Provided a supplemental ice bath method for verification of rated output.
c) Provided constructional and type test requirements for glands used to terminate heating devices to an exposed enclosure.

Systèmes de traçage par résistance électrique pour applications industrielles et commerciales - Partie 1: Exigences générales et d'essai

General Information

• Status: Published
• Publication Date: 26-Jun-2024
• ICS: 25.180.10 - Electric furnaces
• Technical Committee: TC 27 - Industrial electroheating and electromagnetic processing
• Drafting Committee: JWG 34 - TC 27/JWG 34
• Current Stage: PPUB - Publication issued
• Start Date: 14-Jun-2024
• Completion Date: 27-Jun-2024

Relations

• Revises: IEC 62395-1:2013 - Electrical resistance trace heating systems for industrial and commercial applications - Part 1: General and testing requirements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC/IEEE 62395-1 ®
Edition 1.0 2024-06
INTERNATIONAL
STANDARD
colour
inside
Electrical resistance trace heating systems for industrial and commercial
applications –
Part 1: General and testing requirements

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IEC/IEEE 62395-1 ®
Edition 1.0 2024-06
INTERNATIONAL
STANDARD
colour
inside
Electrical resistance trace heating systems for industrial and commercial

applications –
Part 1: General and testing requirements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.180.10 ISBN 978-2-8322-9002-6

– 2 – IEC/IEEE 62395-1:2024 © IEC/IEEE 2024
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General requirements . 14
4.1 General . 14
4.2 Electrically conductive covering . 15
4.3 Electrical circuit protection requirements for branch circuits . 15
4.4 Temperature requirements . 15
4.4.1 General . 15
4.4.2 Stabilized design . 15
4.4.3 Controlled design . 15
4.4.4 Controls and monitoring for fire sprinkler systems and safety showers . 16
5 Testing . 16
5.1 Type tests – General . 16
5.2 Type tests – All applications . 19
5.2.1 Dielectric test . 19
5.2.2 Electrical insulation resistance test . 20
5.2.3 Flammability test . 20
5.2.4 Room temperature impact test . 23
5.2.5 Minimum temperature impact test . 25
5.2.6 Deformation test . 26
5.2.7 Cold bend test . 27
5.2.8 Water resistance test . 28
5.2.9 Integral components resistance to water test . 28
5.2.10 Verification of rated output . 29
5.2.11 Thermal stability of electrical insulating material . 33
5.2.12 Thermal performance test . 33
5.2.13 Maximum sheath temperature . 35
5.2.14 Verification of start-up current . 46
5.2.15 Verification of the electrical resistance of the electrically conductive
covering . 46
5.2.16 Test for heating device / heating device set glands - General . 47
5.2.17 Connection Integrity (integral components) . 48
5.3 Type tests – Additional tests for outdoor exposed surface heating
installations without thermal insulation . 50
5.3.1 Verification of rated output . 50
5.3.2 Determination of maximum sheath temperature . 50
5.3.3 Increased moisture resistance test . 50
5.3.4 UV and condensation test . 51
5.3.5 Resistance to cutting test . 51
5.3.6 Abrasion test . 51
5.3.7 Tension test . 52
5.3.8 Rail system voltage spike test . 52
5.3.9 Rail system over-voltage test . 53

5.4 Type tests – Additional tests and test modifications for embedded heating
applications. 53
5.4.1 Verification of rated output . 53
5.4.2 Determination of maximum sheath temperature . 53
5.4.3 Resistance to cutting test . 53
5.4.4 Flammability test . 53
5.5 Type tests – Additional tests for applications of trace heaters internal to
conduit and piping . 53
5.5.1 Verification of rated output . 53
5.5.2 Determination of maximum sheath temperature . 53
5.5.3 Increased moisture resistance test . 54
5.5.4 Pull-strength test . 54
5.6 Type tests – Additional requirements for sprinkler systems . 55
5.6.1 Normal and abnormal operation test . 55
5.6.2 Normal operation test with controller . 55
5.6.3 Abnormal operation test with controller malfunctioning. 58
5.6.4 Abnormal operation test without controller . 58
5.6.5 Testing for control systems for fire sprinkler systems . 58
5.7 Routine tests . 58
5.7.1 Dielectric test . 58
5.7.2 Verification of rated output . 59
6 Marking . 59
6.1 General . 59
6.2 Product markings . 59
7 Installation instructions . 60
Annex A (informative) Determination of test samples for type testing . 62
Bibliography . 64

Figure 1 – Flammability test . 22
Figure 2 – Example of room temperature impact test apparatus . 24
Figure 3 – Example of minimum temperature impact test apparatus . 26
Figure 4 – Cold bend test . 27
Figure 5 – Integral components resistance to water test . 28
Figure 6 – Verification of rated output . 32
Figure 7 – Verification of sheath temperatures utilizing pipe sculpture fixture . 37
Figure 8 – Verification of sheath temperatures utilizing plate fixture . 39
Figure 9 – Verification of sheath temperatures utilizing plate fixture with serpentined
sample . 40
Figure 10 – Plate fixture with two samples crossed over . 41
Figure 11 – Plate fixture with a single sample crossed over . 42
Figure 12 – Maximum sheath temperature using the product approach . 46
Figure 13 – Gland temperature measurement – location of thermocouples . 48
Figure 14 – Typical splice firm attachment apparatus . 49
Figure 15 – Abrasion test . 52
Figure 16 – Sprinkler system temperature control test – branch line arrangement . 56

– 4 – IEC/IEEE 62395-1:2024 © IEC/IEEE 2024
Figure 17 – Sprinkler system temperature control test – branch line – alternative
arrangement . 57
Figure 18 – Sprinkler system temperature control test – supply pipe arrangement . 57

Table 1 – Trace heater and surface heater types and related attributes . 17
Table 2 – Applicable tests for trace heaters, surface heaters
...